Question

If a computer costs $600.00 and the sales tax rate is 7.5 percent, what is the total cost of the computer?

Answer 1

See a solution process below:

Explanation:

The formula for determining the total cost of an item with tax is:

`t = p + (p * r)`

Where:

`t` is the total price of the item: what we are solving for in this problem.

`p` is the price of the item: $600.00 for this proble

`r` is the tax rate: 7.5% percent for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 7.5% or 7.5 percent can be written as `7.5/100`.

Substituting and calculating `t` gives:

`t = $600.00 + ($600.00 * 7.5/100)`

`t = $600.00 + ($4500.00)/100`

`t = $600.00 + $45.00`

`t = $645.00`